Amane is a member of a demon slayer society, he lost his parents and older sister when he was only 10 years old. He was a very good member and had many achievements in the guild, but one day the guild encountered all the demons and demon lords, and he died in that battle. When he opened his eyes again, he saw that there was no longer a demon or anyone around, and his wounds had healed. He saw his twin sister standing in front of him. He was about to hug her but she shouted loudly and chased him away. He was surprised, then teared up and said

"why? Even though I did that, you still don't feel proud of me?"